Casement-window.



UNITE STATES ATIENT @FFIGE.

CASEIVIENT-WINDOW.

Specification of Letters Patent.

Patented May 7, 1907.

Applic filed September 6, 1906. gerial No. 333,505-

To aZZ whom it may concern:

Be it known that I, IGNAOY WROBLEWSKI, a subject of the Emperor of Austria, and a resident of Krakow, Province of Galicia, Austria-Hungary, have invented certain new and useful Improvements in Casement-Windows, of which the following is a specification, accompanied by drawings.

This invention relates to improvements in French or casement windows, more particularly to that class of French windows which open inwardly and in which the sashes are pivoted and vertically movable.

The objects of the invention are to improve upon the construction and operation of such windows and enable the sashes to be more readily raised and lowered and maintained in any desired position.

Further objects of the invention will hereinafter appear and to these ends the invention consists of means for carrying out the above objects embodying the features of construction, combinations of elements and arrangement of parts having the general mode of operation substantially as hereinafter fully described and claimed in this specification and shown in the accompanying drawings, in which,

Figure 1 is a side elevation of a window embodying the invention; Fig. 2 is a transverse vertical sectional view on the line 2-2 of Fig. 1, looking in the direction of the arrows; Fig. 3 is a horizontal sectional view on the line 3*?) of Fig. 1, looking in the direction of the arrows] Referring to the drawings A represents the window sill and B the top rail of the window frame, while 0 represents the side rails of the window frame. The window sashes are pivotally and vertically movable in the window frame, and in this instance a double window is shown, although the invention is equally applicable to single windows or to doors. The side rails D of the window sashes are suitably pivoted to the frame C, in this instance the frame C being provided with sockets E, while the side rails of the windows ashes are provided with projecting hooks or pivot pins F, which seat in the sockets E and are vertically movable therein.

Interlocking dust, air and water proof connections are provided on all sides of the window between the sash and the frame. As shown, the window sill A is grooved along its length at G and the lower sash rail H is also grooved at I. The tongue or projection J on the lower sash rail enters the groove G in the window sill when the sash is in lowered position, and the outer tongue or projection K of the lower sash rail is seated outside of and below the upper and outer edge of the window sill, as shown in sectional view in Fig. 2 when the sash is in lowered position. According to this construction a secure air and water tight joint is formed.

The top sash rail L is adapted to slide vertically inside of the upper rail B of the window frame, and suflicient space is provided between the top of the sash rail L and the rail B to permit vertical movement.

In order to open the window, first one wing or sash of the window must be raised and then the other. Suitable means are provided for raising and lowering the window sashes, and

in accordance with this invention the window raising and lowering devices are shown in the form of pivoted cams 0, having operating handles P connected thereto. The cams O are suitably pivoted on the side rails D of the sashes in brackets Q, and suitable forks or projections R are secured to the side rails C of the window frame, into which forks the cams 0 project. The forks or bearings R are stationary so that in raising and lowering the handles P of the cams O, the window sashes are raised and lowered. The forks or bearings R, as shown, are set or countersunk at their closed ends into the frames C of the window, and project laterally at their open ends over the inner face of the sash, being provided with attaching flanges R extending upward and downward from opposite points for securing the forks to the window casin The countersinking of the outer closed ends of the forks in the recesses in the window casing provide pocketsin which the outer ends of the cams play when the sashes are swung open, whereby interference between said cams and forks is avoided. In opening one of the window sashes the handle P of the cam O is turned from the lowered position as shown in Fig. 1 to an upright position against the face of the sash rail D so that the handle will not interfere with opening the window. Preferably the bearing frame S to which the cam is pivoted is recessed opposite the cam, and the material of the sash rail D is recessed also or countersunk for the reception of the rear portion of the cam, and to prevent interference between the cam and the side of the fork or bearing R in opening the window.

As shown, the side frames C of the window are grooved or recessed throughout their length, and the side rails D of the window sashes are provided with tongues or ribs U which enter the grooves T and form an interlocking connection. Preferably the grooves T have the form shown in horizontal section in Fig. 3, in which the outer sides of the grooves are curved or slanting to permit the window to be readily swung on its pivots in opening and closing.

In accordance with this invention it will be seen that the raising and lowering devices are situated conveniently at each side of the window and the handles P project inwardly so that they may be readily grasped and operated. There is .no danger that the handles will interferewith or break the window panes since they are adapted to extend parallel with the side rails of the window sashes when in raised position instead of an angle thereto.

The projections or bearing surfaces a and b of the fork extend over and under the-cam 0, because in raising the window the cam bears against the lower rojection b to pry the window up and in owering the window the cam bears against the upper projection a to force the window down in case it should stick. With this construction the window cannot stick and then drop suddenly and thus break the glass, but a constant even movement is obtained in both raising and lowering the window and the window may be maintained in any desired position.

I claim as my invention:

1. ,In a casement window the combination of a window frame provided with a recess in its inner edge, a vertically movable window sash hinged to swing on said frame, and

means for lifting and lowering said sash for unlocking and looking it, said means comprising a fork countersunk in said recess and projecting laterally over the inner face of a side rail of the sash, a bearing late secured to said' inner face of the sash rai adjacent to said fork, and a cam shaft journaled in bear ings of said plate and provided with an actuating handle and with a cam engaging said fork and extending into the countersunk recess in the window frame when the sash is swung open.

2. In a casement window the combination of a window frame provided with a recess in its inner edge, a vertically movable window sash hinged to swing on said frame, and means for lifting and lowering said sash for unlocking and locking it, said means comprising a fork countersunk in said recess and projecting laterally over the inner face of a side rail of the sash, said fork having attaching flanges projecting in opposite directions from the tines about midway of their length, a bearing plate secured to said inner face of the sash rail adjacent to said fork, and a cam shaft journaled in bearings of said plate and provided with an actuating handle and with a cam engaging said fork and extending into the countersunk recess in the window frame when the sash is swung open.

In testimony whereof I have signed this specification in the presence of two subscribing' witnesses.

IGNACY WROBLEWSKI.

Witnesses p HANsoN C. Coxn, JACK I-I. BAKER. 

